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package examples.generics;

import java.util.ArrayList;
import java.util.Collections;
import java.util.List;

public class Deal {
	public static void main(String[] args) {
		int numHands = args.length > 0 ? Integer.parseInt(args[0]) : 4;
		int cardsPerHand = args.length > 1 ? Integer.parseInt(args[0]) : 5;

		// Make a normal 52-card deck.
		String[] suit = new String[] { "spades", "hearts", "diamonds", "clubs" };
		String[] rank = new String[] { "ace", "2", "3", "4", "5", "6", "7",
				"8", "9", "10", "jack", "queen", "king" };
		List<String> deck = new ArrayList<String>();
		for (int i = 0; i < suit.length; i++)
			for (int j = 0; j < rank.length; j++)
				deck.add(rank[j] + " of " + suit[i]);

		// Shuffle the deck.
		Collections.shuffle(deck);

		if (numHands * cardsPerHand > deck.size()) {
			System.out.println("Not enough cards.");
			return;
		}

		for (int i = 0; i < numHands; i++)
			System.out.println(dealHand(deck, cardsPerHand));
	}

	public static <E> List<E> dealHand(List<E> deck, int n) {
		int deckSize = deck.size();
		List<E> handView = deck.subList(deckSize - n, deckSize);
		List<E> hand = new ArrayList<E>(handView);
		handView.clear();
		return hand;
	}
}
